The large star cluster in Coma Berenices called Mel111, accompanied by several galaxies, notably the edge-on NGC 4565 at lower left and the spiral NGC 4559 at upper left. The field of view is 7.5° by 5°, so similar to binoculars. This is a stack of 12 x 6-minute exposures with the Sharpstar 61mm EDPH II telescope at f/4.6 with its reducer (for a focal length of 280mm), and Canon EOS Ra at ISO 800. Sub-frames dithered with the MGEN3 auto-guider. No darks applied. Diffraction spikes added in post for artistic effect.
A complex of halo phenomena on the evening of April 15, 2022, Good Friday of the 2022 Easter weekend, around the almost Full Moon. Ice crystals in the high cloud created the halos and arcs, set in the spring night sky, with the Big Dipper at top, Arcturus to the left, and Regulus and Leo at right. The colours of the arcs and sundogs were just visible to the unaided eye. Visible are: — The 22° halo — A large partial halo that looks like a 46° halo but is actually a supralateral arc. — A pair of paraselene (called parhelia when they are around the Sun) or colourful "moondogs" sit on either side of the Moon just outside the 22° halo. — The top of the 22° halo has a colourful upper tangent arc plus a faint Parry arc. — Tangent to the supralateral arc is a rainbow-hued circumzenithal arc. — A paraselenic (?) circle (called a parhelic circle when it is created by the Sun) runs parallel to the horizon through the moondogs and Moon. — A faint and wide vertical light pillar also runs through the Moon up to the top arcs. This is a blend of 7 exposures from 30 seconds to 1/20 seconds to help retain the disk of the Moon amid the bright and hazy sky. All with the 11mm TTArtisan full-frame fish-eye lens at f/4 and Canon R6 at ISO 100. Exposures blended with luminosity masks created with ADP Pro v3.
A complex of halo phenomena on the evening of April 15, 2022, Good Friday of the 2022 Easter weekend, around the almost Full Moon. Ice crystals in the high cloud created the halos and arcs, set in the spring night sky, with the Big Dipper at top, Arcturus to the left, and Regulus and Leo at right of centre. The colours of the arcs and sundogs were just visible to the unaided eye. Visible are: — The main and common 22° halo. — A large partial halo that looks like a 46° halo but is actually a supralateral arc. — A pair of paraselene (called parhelia when they are around the Sun) or colourful "moondogs" sit on either side of the Moon just outside the 22° halo. — The top of the 22° halo has a colourful upper tangent arc plus a faint Parry arc. — Tangent to the supralateral arc is a rainbow-hued circumzenithal arc. — A paraselenic (?) circle (called a parhelic circle when it is created by the Sun) runs parallel to the horizon through the moondogs and Moon. — Far to the west is a rare 120° paraselene, another moondog. Had their been more haze to the east there would have been another 120° paraselene to the left for a more symmetrical display. This is a stitch of 7 exposures all 30 seconds with the 11mm TTArtisan full-frame fish-eye lens at f/4 and Canon R6 at ISO 100. Segments stitched with PTGui with full-frame fisheye projection.
